Book/Report FZJ-2017-02352

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$^{\alpha}$-Zählung von Plutonium-Isotopen mit Flüssig-Szintillatoren : Vermeidung von Fehlern, die von einer Wandadsorption des Plutoniums herrühren

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1963
Kernforschungsanlage Jülich, Verlag Jülich

Jülich : Kernforschungsanlage Jülich, Verlag, Berichte der Kernforschungsanlage Jülich 127, 9 p. ()

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Report No.: Juel-0127-PC

Abstract: Tri-n-octylphosphineoxide (TOPO) has been found to be a suitabl non-quenching complexing agent for application to internal liquid scintillation of Pu eliminating the errors due to chemical wall-adsorption of hydrolized species of Pu-ions. The excellent light yield and transmission properties of the (Dioxan + PPO + POPOP + Naphtalene + TOPO) liquid scintillator allow the use of conventional counting equipment as normally used with ZnS and NaJ scintillation crystals. With such equipment counting plateaus with a slope of less than 0.1 % per 100 V over the best range are readily obtained. With low noise equipment excellent precision for absolute alpha-counting can be achieved. The scintillator mixes with samples of aqueous Pu-solutions containing considerable quantities of salts and with samples of organic Pu-solutions containing organic complexing agents of low volatility. Both these types of samples cause difficulti for counting plate techniques due to self-absorption. The liqui scintillation method described is therefore especially favourable in the analytical evaluation of solvent extraction experiments.


Contributing Institute(s):
  1. Publikationen vor 2000 (PRE-2000)
Research Program(s):
  1. 899 - ohne Topic (POF3-899) (POF3-899)

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 Record created 2017-03-23, last modified 2021-01-29